From 8d11c6c8213f46f0fa19826917c255edd5d43cb1 Mon Sep 17 00:00:00 2001 From: mzuenni Date: Sun, 28 Jul 2024 22:54:40 +0200 Subject: Test (#4) * update * moved content in subdir * rename file * add test setup * add test setup * add github action * automaticly test all cpp files * timeout after 10s * setulimit and dont zero memory * test build pdf * install latexmk * update * update * ngerman * fonts * removed old code * add first test * added tests * test in sorted order * more tests * simplified test * more tests * fix suffix tree * fixes and improvements * done ust lst directly * fix swap * add links to pdf * fix constants * add primorial * add comment * various improvements * more tests * added missing stuf * more tests * fix tests * more tests * more tests * more tests * fix recursion? * test trie * more tests * only use python temporarily for listings * only use python temporarily for listings * more tests * fix longestCommonSubstring * more tests * more tests * made code more similiar * fix? * more tests * more tests * more tests * add ahoCorasick test + limit 4GB stack size * more tests * fix test * add additional test * more tests * more tests * fix? * better fix * fix virtual tree * more tests * more tests * recursive closest pair * more tests * decrease limit * new tests * more tests * fix name * more tests * add test * new test * more tests * more tests * more tests * more tests * new test and content * new code * new code * larger tests * fix and test * new test * new test * update pdf * remove comments * new test * more tests * more testcases * more tests * increased limit * more tests * more tests * more tests * new tests * more tests * shortened code * new test * add basic tests for bigint * more tests * removed old files * new test * ignore some files * more auto more ccw * fix test * more tests * fix * new tests * more tests * more tests * stronger test * actually verify delaunay... * more tests * fix header * more tests * run tests parallel? * test parralel? * add --missing * separate workflows * test * is the pdf checked? * separate workflows * fix workflow * more workflows --------- Co-authored-by: Yidi --- test/string/kmp.cpp | 85 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 test/string/kmp.cpp (limited to 'test/string/kmp.cpp') diff --git a/test/string/kmp.cpp b/test/string/kmp.cpp new file mode 100644 index 0000000..9c9c924 --- /dev/null +++ b/test/string/kmp.cpp @@ -0,0 +1,85 @@ +#include "../util.h" +#include + +vector naive(string_view s) { + vector res(sz(s) + 1, -1); + for (int i = 0; i < sz(s); i++) { + for (int j = 0; j <= i; j++) + if (s.substr(0, j) == s.substr(i-j+1, j)) + res[i+1] = j; + } + return res; +} + +void stress_test_preprocessing() { + ll queries = 0; + for (int tries = 0; tries < 100'000; tries++) { + int n = Random::integer(1, 15); + auto s = Random::string(n, "abc"); + auto got = kmpPreprocessing(s); + auto expected = naive(s); + if (got != expected) cerr << " error" << FAIL; + queries += n; + } + cerr << " tested random queries: " << queries << endl; +} + +constexpr int N = 10'000'000; +void performance_test_preprocessing() { + timer t; + auto s = Random::string(N, "a") + Random::string(N, "ab") + Random::string(N, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$#"); + t.start(); + auto res = kmpPreprocessing(s); + t.stop(); + hash_t hash = 0; + for (int x : res) hash += x; + if (t.time > 500) cerr << " too slow: " << t.time << FAIL; + cerr << " tested performance: " << t.time << "ms (hash: " << hash << ")" << endl; +} + +vector naive(string_view s, string_view sub) { + vector res; + auto pos = s.find(sub); + while (pos != string_view::npos) { + res.push_back(pos); + pos = s.find(sub, pos + 1); + } + return res; +} + +void stress_test_kmp() { + ll queries = 0; + auto a = Random::string(10'000, "abc"); + for (int tries = 0; tries < 10'000; tries++) { + int n = Random::integer(1, 10); + auto b = Random::string(n, "abc"); + auto got = kmpSearch(a, b); + auto expected = naive(a, b); + if (got != expected) cerr << " error" << FAIL; + queries += got.size(); + } + cerr << " tested random queries: " << queries << endl; +} + +void performance_test_kmp() { + timer t; + auto s = Random::string(N, "a") + Random::string(N, "ab") + Random::string(N, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$#"); + auto sub1 = Random::string(N/2, "a"); + auto sub2 = Random::string(N/2, "ab"); + hash_t hash = 0; + t.start(); + hash += kmpSearch(s, sub1).size(); + hash += kmpSearch(s, sub2).size(); + t.stop(); + if (t.time > 500) cerr << " too slow: " << t.time << FAIL; + cerr << " tested performance: " << t.time << "ms (hash: " << hash << ")" << endl; +} + +int main() { + cerr << "preprocessing:" << endl; + stress_test_preprocessing(); + performance_test_preprocessing(); + cerr << "kmp:" << endl; + stress_test_kmp(); + performance_test_kmp(); +} -- cgit v1.2.3